The role of alkalinity in the mortality of Daphnia magna in bioassays of sediment-bound copper

Shaner, Stephen W.; Knight, Allen W.

doi:10.1016/0742-8413(85)90162-8

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Cited by 7 publications

(2 citation statements)

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“…The drop in pH at high concentrations might have affected mobilization and chemical speciation of metals . According to Shaner & Knight (1985) D. magna tolerates pH down to 5 .0 for 24 h . At concentrations corresponding to the 48-h LC50s pH was around 7 .0, and the decrease in pH alone, therefore, can not explain mortality in these tests .…”

Section: Resultsmentioning

confidence: 99%

Toxicity of metal polluted sediments to Daphnia magna and Tubifex tubifex

Wiederholm¹,

Dave

1989

Hydrobiologia

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Sediments from four lakes polluted by effuents from steel industries and from two reference lakes were investigated . The sediments contained elevated concentrations of oil, Pb, Cd, Hg, Zn, Ni and Cr in different combinations . The toxicity of the polluted sediments to Daphnia was much higher than reported elsewhere (24-h LC50 0 .5-1 .5 vol %). Tubifex survived more than 3 months in the polluted sediments, but growth and reproduction were inhibited .

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Section: Resultsmentioning

confidence: 99%

Toxicity of metal polluted sediments to Daphnia magna and Tubifex tubifex

Wiederholm¹,

Dave

1989

Hydrobiologia

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“…respectively. Devi and Rao (1989) Shaner and Knight (1985) reported Daphnia maqna 24-hour LCggS of 1,332 and 1,578 ppm copper in sediment at alkalinities of 600 and 1000 mg/liter, respectively. They found that increasing alkalinity resulted in decreased mortality at a given sediment copper concentration.…”

Section: Invertebratesmentioning

confidence: 99%